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Rollei RPX 25 35mm x 30.5m

Camera Material
Rollei RPX 25 Black & White 35mm bulk film — ISO 25, ultra-fine grain (RMS 8), very high resolution, polyester base, 30.5m bulk roll for self-loading, ideal for landscape, architecture, and studio photography
Rollei RPX 25 Black & White 35mm bulk film — ISO 25, ultra-fine grain (RMS 8), very high resolution, polyester base, 30.5m bulk roll for self-loading, ideal for landscape, architecture, and studio photography
$67.50 $75.00

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Description

Rollei RPX 25 — 35mm x 30.5m Black & White Bulk Film

The Rollei RPX 25 is a low-speed, ultra-fine grain black and white negative film engineered for photographers who demand the highest standards in resolution, sharpness, and detail. With an exceptionally low RMS granularity of just 8 — significantly below comparable films — the RPX 25 enables virtually unlimited enlargements without visible grain, making it the benchmark choice for landscape, architectural, and studio photography.

 

Available in a 35mm bulk roll of 30.5 meters, the RPX 25 is ideal for photographers who load their own cassettes and require a consistent, high-quality emulsion for traditional darkroom work or high-resolution digital scanning workflows. Its polyester base ensures dimensional stability and durability across demanding shooting conditions.

 

Film Specifications

Brand: Rollei
Model: RPX 25
Film Type: Black & White Negative
Format: 35mm Bulk Roll
Roll Length: 30.5 Meters
ISO Speed: ISO 25 / 15°
Sensitivity: Panchromatic
Grain (RMS): 8 (Ultra-Fine)
Resolution: Very High
Film Base: Polyester (PE)
Enlargement Potential: Practically Unlimited
Color / B&W: Black & White

Key Features

Ultra-Fine Grain — RMS 8

Exceptionally low granularity of RMS 8 — well below the typical RMS 9.5–10 range — for smooth tones and invisible grain even at extreme enlargements

Very High Resolution

Optimized emulsion structure resolves the finest details with exceptional clarity, ideal for large-format prints and high-resolution drum scans

Panchromatic Sensitivity

Full panchromatic response ensures accurate tonal reproduction across the entire visible spectrum from deep shadows to bright highlights

Polyester (PE) Film Base

Dimensionally stable polyester base resists curling and stretching for consistent flatness in both darkroom and scanning workflows

Bulk Roll Economy

30.5-meter roll allows photographers to load custom-length cassettes, significantly reducing per-shot cost compared to pre-loaded cartridges

Darkroom & Digital Compatible

Equally suited for traditional chemical enlargements and modern high-resolution flatbed or drum scanner workflows

Low ISO — Maximum Image Quality

ISO 25 speed prioritizes image quality over sensitivity, delivering the finest tonal gradation and micro-contrast available in 35mm film

Ideal Shooting Scenarios

Best suited for landscape, architecture, still life, and studio photography where a tripod is used and maximum detail is the priority

Bulk Loading & Development Guide

 

Get the best results from your Rollei RPX 25 bulk roll in 4 simple steps

 

1

Load in Darkness

Use a bulk film loader in complete darkness or a changing bag to load cassettes to your desired length

2

Set ISO 25

Set your camera's ISO to 25 — use a tripod in low-light to compensate for the slow speed

3

Expose Carefully

Meter accurately — RPX 25 rewards precise exposure with exceptional tonal depth and micro-contrast

4

Develop

Process in standard B&W developers — Rodinal, ID-11, or HC-110 all yield excellent results

✓ Pro Tip! For maximum sharpness and finest grain, develop in a fine-grain developer like Ilford ID-11 at stock dilution with gentle agitation.

Technical Details

Full technical breakdown of RPX 25

Emulsion Type

Black & White Negative — Panchromatic

ISO / DIN Speed

ISO 25 / 15° DIN

RMS Granularity

8 (Ultra-fine — industry-leading)

Film Base

Polyester (PE) — dimensionally stable

Roll Length

30.5 meters (approx. 18 x 36-exp. rolls)

Compatible Formats

135-36, 120 Roll Film, 4×5" Sheet Film

Storage

Store in cool, dry place — refrigerate for long-term storage

Development

Standard B&W chemistry — Rodinal, ID-11, HC-110

Note: Always load and unload film in total darkness or a lightproof changing bag to avoid fogging the emulsion.

Available Formats

Rollei RPX 25 is available in multiple formats

✓ 135-36

35mm cartridge — 36 exposures, ready to load

✓ 120 Roll Film

Medium format roll for 6x4.5, 6x6, and 6x7 cameras

✓ Sheet Film (4×5")

Large format sheet film for view cameras

✓ 35mm Bulk Roll — 30.5m

Economy bulk roll for self-loading custom cassettes

100% Authentic Rollei Product

Every roll is sourced directly from authorized Rollei distribution channels — genuine German film stock with full quality assurance.

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